There are four distinct sorts of geothermal heat pumps readily available currently.
Each and every a person has a distinct strategy of connecting to the heating distribution program in your dwelling or making. Some sorts are far more economical than other people at delivering area conditioning to the making, but that is a home of the distribution.
All of these GSHP sorts however get their power from the floor loop, which transfers the absorbed heat into the interior refrigerant loop. It’s what occurs to the heat following that is what helps make the variance concerning sorts.
The 4 distinct sorts of geothermal heat pumps are drinking water to air, drinking water to drinking water, combo and split heat pumps.
Water to Air
The first and likely most utilized geothermal heat pump is the drinking water to air heat pump. This heat pump is utilized for houses with forced air methods, and in essence replaces a traditional furnace. The floor loop delivers in absorbed heat to the refrigerant loop (the drinking water portion of “drinking water to air”). That refrigerant is then compressed and cycled in entrance of a enthusiast coil unit to be despatched by means of duct do the job distribution to the house (the air portion of “drinking water to air”. This approach can also be switched in reverse to give cooling to a construction.
1 feasible layout challenge is the sizing of the ductwork. Due to the fact geothermal methods are regarded as a lower temp heat resource, a better volume of air is essential to provide the very same heating or cooling load. This will both have to have bigger ductwork to accommodate for the better air volume, or a specialised, little-duct, large-velocity forced air program like Unico or SpacePak.
Water to Water
The 2nd type is a drinking water to drinking water, or hydronic. This type functions the very same as all other heat pumps on the floor loop facet of the refrigerant, but alternatively of sending the compressed and heated refrigerant to a enthusiast coil, it is transferred instantly into a different drinking water loop that circulates by means of the heat pump, and into the drinking water-centered distribution. This hydronic distribution is most usually radiant heat (Radiant and Geothermal Posting), but it can also be utilized in conjunction with a domestic hot drinking water or a outdoors snow soften program.
The third type of heat pump is a combo unit. This combines the prior two sorts, supplying both forced air and hydronic distribution. This is great in households or structures in which both sorts of distribution are current. Some zones may perhaps be large heat reduction, these kinds of as rooms with massive home windows, or in the vicinity of an exit door, and will have to have far more heat in the area than just radiant or just forced air could give alone. This is in which a combo unit that can tackle both could come in really helpful.
The past type on the market is recognised as a split unit. This type is in essence the very same as a frequent geothermal heat pump on the drinking water facet, but it sends the refrigerant in a very long loop to a remote air handler. This helps make it easier in bigger careers to maintain the heat pump in a mechanical place with all the loop subject and circulation heart connections, and however have an air handler delivering heat to a remote area, these kinds of as the 2nd story of a huge house. This lets for better flexibility in the general layout of the heating program.